Virtual LANs enable you to divide the network into subnetworks without having to add to the physical network environment. The subnetworks are virtual and use the same physical network resources. VLANs facilitate network administrations because the smaller groups are easier to maintain.
You can create VLANs according to various criteria, but each VLAN must be assigned a VLAN tag or VLAN ID (VID). The VID is a 12-bit identifier between 1 and 4094 that identifies a unique VLAN.
For more information on administering VLANs, refer to Managing Oracle Solaris 11.1 Newtwork Performance at:
http://docs.oracle.com/cd/E26502_01/html/E28993/gmbab.html#scrolltoc